Spacemail for Claude vs eryx
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Spacemail for Claude compared with eryx
| Detail | 
Spacemail for Claude | 
eryx |
|---|
| What it does | Free MCP connector for Claude to access Spacemail email
| WebAssembly sandbox for running untrusted Python safely
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| Stage | Not given
| Not given
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| Founded | Not given
| Not given
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| Based in | GB
| Not given
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| Pricing model | Open source
| Open source
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| Pricing | Free
| Not given
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| Key features | - Check new mail across all mailboxes with message previews
- Search emails by sender, subject, words or date
- Read full email messages with attachment names
- Draft threaded replies and new emails saved to Drafts
- Mark messages as read or unread and flag important ones
- Archive, move or delete messages to Trash
- Works with Claude Desktop, Claude Code, Cursor and Windsurf
- Support for up to three mailboxes
- Drafts saved for manual review before sending
- Data stays on your computer, not collected by Norwich Website Design
| - Full CPython 3.14 with standard library
- Async callbacks from sandboxed code
- No filesystem or network unless allowed
- Fast startup in 1–5 milliseconds
- Embed from Python, JavaScript or Rust
- MCP server support
- gRPC server deployment
- Hosted execution over HTTP and WebSocket
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| What makes it different | - Free and open-source under MIT licence
- Email content marked as untrusted to prevent phishing attacks
- Deleted messages go to Trash, not permanently deleted
- Independent project not affiliated with Spaceship or Spacemail
| - Full CPython 3.14 running in WebAssembly
- Async callbacks between sandbox and host
- Extremely fast sandbox startup
- Works as MCP server for AI agents
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| Free plan | Not given
| Not given
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| Open source | Not given
| Not given
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| Platforms | Not given
| Not given
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| Public API | Not given
| Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 44 ▼ −1 (down) since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 0 | 0 |
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| Citation Flow (Majestic) | 4 | 6 |
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| Referring domains (Majestic) | 3 | 2 |
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4 details filled in for both companies.
More alternatives to Spacemail for Claude More alternatives to eryx